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公开(公告)号：US4212046A
公开(公告)日：1980-07-08
申请号：US904264
申请日：1978-05-09
申请人： Fumio Andow , Tetsuo Matsushima , Eiichi Okamoto
发明人： Fumio Andow , Tetsuo Matsushima , Eiichi Okamoto
CPC分类号： H02H3/40
摘要： In a digital distance relaying system the principle of comparing the amplitude values of alternating current quantities is used. In one example, amplitude values of V and V-IZ are compared and in the other example the amplitude values of V-IZ and IZ are compared for determining the operating point of the relay system.
摘要翻译： 在数字距离中继系统中，使用比较交流电流量幅值的原理。 在一个示例中，比较V和V-IZ的振幅值，并且在另一示例中，比较V-IZ和IZ的振幅值以确定中继系统的工作点。
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公开(公告)号：US4073009A
公开(公告)日：1978-02-07
申请号：US717939
申请日：1976-08-26
申请人： Fumio Andow , Tetsuo Matsushima , Minoru Iwasaki
发明人： Fumio Andow , Tetsuo Matsushima , Minoru Iwasaki
CPC分类号： G01R19/04
摘要： The apparatus comprises a sampling hold circuit for sampling the amplitude of a sinusoidal wave at a predetermined frequency, a data sample extracting circuit for extracting two data samples at two points immediately before and after the peak value of the sinusoidal wave, and an operation circuit responsive to the absolute values of the two data samples for calculating the amplitude value of the sinusoidal wave.
摘要翻译： 该装置包括用于以预定频率对正弦波的振幅进行采样的采样保持电路，用于在正弦波的峰值之前和之后的两个点提取两个数据样本的数据样本提取电路，以及响应于 与用于计算正弦波的振幅值的两个数据样本的绝对值相关。
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公开(公告)号：US4073008A
公开(公告)日：1978-02-07
申请号：US717942
申请日：1976-08-26
申请人： Fumio Andow , Tetsuo Matsushima , Minoru Iwasaki
发明人： Fumio Andow , Tetsuo Matsushima , Minoru Iwasaki
CPC分类号： G01R19/04
摘要： The amplitude value of a sinusoidal wave is calculated by operating means which processes absolute values of two data samples which are sampled from the sinusoidal wave at two points spaced 90.degree. electrical degrees apart thereby producing an electrical signal proportional to the amplitude value. The operation means comprises a comparator, a combination of an adder and a subtractor, or a combination of a comparator and an adder. The output of the comparator or the combination is multiplied with a predetermined coefficient and then added together to produce said signal.
摘要翻译： 正弦波的振幅值通过操作装置计算，该装置处理两个数据采样的绝对值，这两个数据样本是从正弦波在两个间隔90°电角度的两个点采样的，从而产生与振幅值成比例的电信号。 操作装置包括比较器，加法器和减法器的组合，或比较器和加法器的组合。 将比较器或组合的输出乘以预定系数，然后相加在一起以产生所述信号。
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公开(公告)号：US5786699A
公开(公告)日：1998-07-28
申请号：US834848
申请日：1997-04-10
申请人： Yukio Sukegawa , Tetsuo Matsushima
发明人： Yukio Sukegawa , Tetsuo Matsushima
IPC分类号： G01R31/327 , H02H3/04 , H02H7/26 , G01R31/08
CPC分类号： H02H7/263 , G01R31/3272 , G01R31/3278 , H02H3/044
摘要： A relay test apparatus for testing a protective relay operation of a protective relay system comprises GPS receivers, respectively connected to the protective relays, each GPS receiver analyzing time data included in a signal transmitted from a satellite and outputting a time signal, simulation signal generators, respectively connected to the protective relays, each simulation signal generator generating a simulation signal and inputting the simulation signal to a corresponding protective relay, and synchronous starting units, respectively provided in the protective relays, each synchronous starting unit starting a corresponding simulation signal generator to generate the simulation signal, when time signals output from the GPS receivers coincide with a preset time at a same time.
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公开(公告)号：US06498709B2
公开(公告)日：2002-12-24
申请号：US09891294
申请日：2001-06-27
IPC分类号： H02H318
CPC分类号： H02H3/40
摘要： A digital distance relay for deciding whether a fault point is within a stipulated operation region by obtaining an impedance to the fault point. The relay comprises: means for deciding whether the impedance is within a specified region by applying a value proportional to the relative phase; and means for deciding the fault point is within the stipulated operation region if: (a) when the load current indicates a sending direction, the positive-phase resistance and reactance are within a stipulated region based on stipulated positive-phase resistance and reactance, and the impedance is decided within the specified region; or (b) when the load current indicates a receiving direction, the positive-phase resistance and reactance are within a stipulated region based on stipulated positive-phase resistance and reactance, or the impedance is decided within the specified region.
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公开(公告)号：US07233470B2
公开(公告)日：2007-06-19
申请号：US10614832
申请日：2003-07-09
申请人： Takahiro Kase , Hidenari Amo , Tetsuo Matsushima
发明人： Takahiro Kase , Hidenari Amo , Tetsuo Matsushima
IPC分类号： H02H3/00
摘要： A distance relay apparatus includes a directional relay element which performs computation to detect a fault, which occurs in the forward direction from an installing point of the relay apparatus, based on a voltage and a current which are received from an object to be protected, a zone-1 distance relay element which performs computation to detect a fault within a predetermined zone, a fault detecting relay element which performs computation to detect a fault within a zone that is narrower than that of the zone-1 distance relay element in terms of data time length which is shorter than that used for the computation of the zone-1 distance relay element, and a logic element which outputs a relay signal in accordance with a detecting operation of the zone-1 distance relay element, the fault detecting relay element, and the directional relay element.
摘要翻译： 距离中继装置包括：方向性继电器元件，其基于从被保护对象接收的电压和电流，进行从中继装置的安装点向前方发生的故障的计算， 区间1距离继电器元件，其执行计算以检测预定区域内的故障;故障检测继电器元件，其执行计算以检测在数据方面比区域-1距离继电器元件窄的区域内的故障 时间长度短于用于计算区间-1距离继电器元件的时间长度;以及逻辑元件，其根据区域1距离继电器元件的检测操作，故障检测继电器元件输出继电器信号， 和方向继电器元件。
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公开(公告)号：US5576625A
公开(公告)日：1996-11-19
申请号：US382764
申请日：1995-02-02
申请人： Yukio Sukegawa , Tetsuo Matsushima
发明人： Yukio Sukegawa , Tetsuo Matsushima
IPC分类号： G01R31/327 , H02H3/04 , H02H7/26
CPC分类号： H02H7/263 , G01R31/3272 , G01R31/3278 , H02H3/044
摘要： A relay test apparatus for testing a protective relay operation of a protective relay system comprises GPS receivers, respectively connected to the protective relays, each GPS receiver analyzing time data included in a signal transmitted from a satellite and outputting a time signal, simulation signal generators, respectively connected to the protective relays, each simulation signal generator generating a simulation signal and inputting the simulation signal to a corresponding protective relay, and synchronous starting units, respectively provided in the protective relays, each synchronous starting unit starting a corresponding simulation signal generator to generate the simulation signal, when time signals output from the GPS receivers coincide with a preset time at a same time.
摘要翻译： 用于测试保护继电器系统的保护继电器操作的继电器测试装置包括分别连接到保护继电器的GPS接收器，每个GPS接收器分析包括在从卫星发送的信号中并输出时间信号的时间数据，模拟信号发生器， 分别连接到保护继电器，每个模拟信号发生器产生模拟信号并将模拟信号输入到相应的保护继电器，以及分别设置在保护继电器中的同步启动单元，每个同步启动单元启动相应的模拟信号发生器以产生 当从GPS接收机输出的时间信号同时与预设时间一致时，模拟信号。
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公开(公告)号：US4857854A
公开(公告)日：1989-08-15
申请号：US927190
申请日：1986-11-05
申请人： Tetsuo Matsushima
发明人： Tetsuo Matsushima
CPC分类号： G01R31/088
摘要： A digital fault locator of this invention comprises a memory for storing input electric amount from a system and a plurality of digital filters having different filter functions to which electric amounts are supplied from the memory. A fault location is determined by selectively providing a specific one of outputs from the digital filters according to a fault time.
摘要翻译： 本发明的数字故障定位器包括用于存储来自系统的输入电量的存储器和具有不同滤波器功能的多个数字滤波器，从该存储器提供电量。 通过根据故障时间从数字滤波器选择性地提供特定的一个输出来确定故障位置。
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9.发明授权
公开(公告)号：US4333151A
公开(公告)日：1982-06-01
申请号：US106365
申请日：1979-12-21
申请人： Tetsuo Matsushima
发明人： Tetsuo Matsushima
摘要： In a method and a system for protecting an electric power system, a signal useful for the protection is produced through operation on a digital data q.sub.m indicative of an instantaneous value at a first time point of an AC electrical quantity and another digital data given by 1/2{axq.sub.m-n -(2-a)xq.sub.m-n+l } where q.sub.m-n and q.sub.m-n+l represent data indicative of instantaneous values of an AC electrical quantity, at a time point in advance of the first time point by an angle of .alpha..degree. (0.ltoreq..alpha..ltoreq.180), and at a time point lagging behind the first time point by an angle of (180-.alpha.).degree., respectively, and a equals to .alpha./90.
摘要翻译： 在一种用于保护电力系统的方法和系统中，通过对表示AC电量的第一时间点的瞬时值的数字数据qm进行操作，并且由1 / 2 {axqm-n-（2-a）xqm-n + 1}其中qm-n和qm-n + 1表示在第一次提前的时间点表示AC电量的瞬时值的数据 以α°（0 <α= 180）的角度点，并且在时间点分别落后于第一时间点（180-α）°的角度，并且等于α/ 90 。
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公开(公告)号：US5666060A
公开(公告)日：1997-09-09
申请号：US700875
申请日：1996-08-21
申请人： Yukio Sukegawa , Tetsuo Matsushima
发明人： Yukio Sukegawa , Tetsuo Matsushima
IPC分类号： G01R31/327 , H02H3/04 , H02H7/26 , G01R31/08
CPC分类号： H02H7/263 , G01R31/3272 , G01R31/3278 , H02H3/044
摘要： A relay test apparatus for testing a protective relay operation of a protective relay system comprises GPS receivers, respectively connected to the protective relays, each GPS receiver analyzing time data included in a signal transmitted from a satellite and outputting a time signal, simulation signal generators, respectively connected to the protective relays, each simulation signal generator generating a simulation signal and inputting the simulation signal to a corresponding protective relay, and synchronous starting units, respectively provided in the protective relays, each synchronous starting unit starting a corresponding simulation signal generator to generate the simulation signal, when time signals output from the GPS receivers coincide with a preset time at a same time.
摘要翻译： 用于测试保护继电器系统的保护继电器操作的继电器测试装置包括分别连接到保护继电器的GPS接收器，每个GPS接收器分析包括在从卫星发送的信号中并输出时间信号的时间数据，模拟信号发生器， 分别连接到保护继电器，每个模拟信号发生器产生模拟信号并将模拟信号输入到相应的保护继电器，以及分别设置在保护继电器中的同步启动单元，每个同步启动单元启动相应的模拟信号发生器以产生 当从GPS接收机输出的时间信号同时与预设时间一致时，模拟信号。
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